Brand New, Unopened [Prevents Entry and Escape] Not only does it prevent pets and babies from entering dangerous rooms and escaping, but it's also perfect as a screen door to keep insects out in the summer! [High-Quality Material] Made of mesh material constructed from high-polymer fiber composite net, it offers excellent breathability and effectively prevents the entry of insects, mosquitoes, and flies. It won't tear even if scratched by a cat. [Convenient Double Zipper] Features zippers that can be opened from both inside and outside (center-open type has a zipper only on the outside). Easy to open and close. Very helpful when pets are left alone. [Easy Installation] Just stick it on with Velcro! No drilling, screws, or construction required! Can be installed in various places such as entrances, doors, hinged doors, back doors, and balconies! Can be removed and folded compactly for storage during the off-season.